Share code of module creation among the several new functions. With this
we let the alias/modname/path parsing to the separate functions, and the
rest with the common one.
This fixes the issue of alias names not being able to contain dots.
Alias names may contain dots. However since kmod_module_from_alias()
still calls kmod_module_new_from_name(), the bug is not entirely fixed,
and will be completely corrected in a later patch.
Split kmod_module_probe_insert_module() in 2:
1) Get list of modules to be loaded
2) Iterate the list, loading the module
With this in future we will be able to cover use cases of modprobe,
that has a logic a bit more complicated.
With this we also change the logic to detect dependency loops: instead
of checking the recursion every STEP times, we now keep a field in
kmod_module, marking it as visited. We simply ignore already visited
modules and thus we break loops.
This field can be used to iterate the modules, controlling whether we
are revisiting a certain module. A function to clear the values in all
modules is needed since when we are iterating, we don't know if the
module is created anew or if it's picked from the pool. Therefore we
can't know if the field is true because of a previous iteration or if
the module was indeed already visited.
Not all libc's have a mtim member in struct stat (dietlibc doesn't).
Change ts_usec() to receive a struct stat as parameter and implement it
accordingly for both cases.
Index dump doesn't use stdio.h function and instead call write()
directly on STDOUT_FILENO file descriptor. Therefore we need to flush
stdio buffers before calling it, to be sure the configuration dump will
appear before index's.
Provide a function to dump the index files to a certain fd. It could be
more optimized (particularly the functions to dump the index that were
copied and pasted from m-i-t), but it seems like the only user of it is
'modprobe -c', used for debugging purposes. So, keep it as is.
Config iterators are useful to get each configuration list, remember its
type and how to get their key/value pair.
softdeps don't have the value yet, because they are stored as string
vectors.
Current limitation is horrible no support to sections: we have to to
have separate header files or to maintain the libkmod-sections.txt file.
We are doing the latter.
Module aliases can be bigger than NAME_MAX. So, replace with PATH_MAX
that is bigger enough to hold them.
Technically in some places NAME_MAX would be sufficient (those using
module names only), but they use functions that can be called with
alias. So increase the buffers in these cases to PATH_MAX too.
Refactor code to use pointer to functions, avoiding the previous
Now comp_types defines a magic header to be checked (size and bytes),
with the associated load() and unload() operations. If a header
matches, their operations are used. Otherwise the regular file
operations (mmap/munmap) are used.
File descriptor close is managed by the common code if it's valid
(>=0). If some code steals the file descriptor (eg: gzopen), then they
must change file->fd to -1.
This way the code should be easier to extend and avoid bugs.
ouch, I did a mess in the original function, fix them:
* on errors (read() < 0), continue reading after the done bytes, not
at position 0.
* read buflen - 1 bytes, so there is always room to store the
trailing \0, as expected by user due behavior of snprintf(),
fgets() and others.
